Provided is a magnetic field detection device that includes a first soft magnetic body and a magnetic detector. The first soft magnetic body includes a first plate and a first protrusion. The first plate includes a first surface including a first outer edge. The first protrusion is provided at a first arrangement position in the first surface and includes a first tip on opposite side to the first surface. The first arrangement position is set back from the first outer edge. The magnetic detector is provided in the vicinity of the first tip.

A magnetic body detecting device constituting a magnet portion for magnetizing a magnetic body from a magnet main body portion, and a correcting portion which is disposed in front of magnet main body portion to correct a magnetic field generated by magnet main body portion, wherein the correcting portion is configured to form a specific position N having a desired magnetic field intensity by canceling out the magnetic field generated by magnet main body portion, and to adjust the magnetic field gradient at a magnetic field null point N of the magnetic field generated by magnet portion by causing magnet main body portion to be separated from a front end portion of magnet portion in accordance with the magnetic field gradient in the correcting portion, and wherein a magnetic sensor is disposed at the magnetic field null point N formed in the front end portion of the magnet portion.

An electronic circuit for measuring an angle and an intensity of an external magnetic field, includes: first and second magnetic field sensing units having sensing axes substantially orthogonal to each other; a voltage generator supplying a synchronization signal, a first voltage waveform to the first magnetic field sensing unit and a second voltage waveform to the second magnetic field sensing unit; a signal conditioning unit configured for adding the first and second sensing output signals and outputting a conditioned signal. The first and second voltage waveforms have substantially the same amplitude and frequency and are phase shifted by about 90° with respect to each other. The conditioned signal and the synchronization signal are inputted into a magnetic field angle detection unit configured for measuring a phase shift between the conditioned signal and the synchronization signal and for determining the angle of the external magnetic field from the measured phase shift.

An electronic circuit for measuring an angle and an intensity of an external magnetic field, includes: first and second magnetic field sensing units having sensing axes substantially orthogonal to each other; a voltage generator supplying a synchronization signal, a first voltage waveform to the first magnetic field sensing unit and a second voltage waveform to the second magnetic field sensing unit; a signal conditioning unit configured for adding the first and second sensing output signals and outputting a conditioned signal. The first and second voltage waveforms have substantially the same amplitude and frequency and are phase shifted by about 90° with respect to each other. The conditioned signal and the synchronization signal are inputted into a magnetic field angle detection unit configured for measuring a phase shift between the conditioned signal and the synchronization signal and for determining the angle of the external magnetic field from the measured phase shift.

The invention relates to an electrical device (1) comprising a support (11) comprising a holding member (111), and an electrical circuit (12) housed at least partially in the support (11) and comprising an array of electrical tracks (122) and a receiving portion (121) designed to receive a magnetic field sensor. The electrical circuit (12) is configured so as to create an electrical link between the magnetic field sensor and an electronic board external to the electrical device (1). The holding member (111) comprises at least one bearing portion (112) forming a stop so as to create a mechanical link between the support (11) and the electronic board so as to position the magnetic field sensor in a free volume formed in an electrical conductor in order to enable the magnetic field sensor to perform measurements of a magnetic field induced by a current flowing in the electrical conductor.

The invention relates to an electrical device (1) comprising a support (11) comprising a holding member (111), and an electrical circuit (12) housed at least partially in the support (11) and comprising an array of electrical tracks (122) and a receiving portion (121) designed to receive a magnetic field sensor. The electrical circuit (12) is configured so as to create an electrical link between the magnetic field sensor and an electronic board external to the electrical device (1). The holding member (111) comprises at least one bearing portion (112) forming a stop so as to create a mechanical link between the support (11) and the electronic board so as to position the magnetic field sensor in a free volume formed in an electrical conductor in order to enable the magnetic field sensor to perform measurements of a magnetic field induced by a current flowing in the electrical conductor.

A magnetic sensor has a Hall IC that has a Hall element formed on a surface of the Hall IC, and a lead frame that supports the Hall IC. The lead frame includes a first region that is disposed in the vicinity of the Hall element and generates a first magnetic field due to a first eddy current generated when a measurement target magnetic field is applied, and second regions that are disposed away from the first region and generate a second magnetic field having an intensity that cancels the first magnetic field by means of second eddy currents generated when the measurement target magnetic field is applied.

A method may include pressing a sensor module onto a control board such that the sensor module is at an initial position where an air gap is present between a module body of the sensor module and the control board such that compliant pins of the sensor module are partially inserted into the control board. The method may include mounting the control board on a power module to cause pins of the power module to be at least partially inserted into the control board and the sensor module to be at least partially inserted in the power module such that a protrusion is through an opening in a busbar. The method may include pressing the control board onto the power module to cause the pins of the power module to be further inserted into the control board, the sensor module to be further inserted in the power module, and the sensor module to be at a final position.

A method may include pressing a sensor module onto a control board such that the sensor module is at an initial position where an air gap is present between a module body of the sensor module and the control board such that compliant pins of the sensor module are partially inserted into the control board. The method may include mounting the control board on a power module to cause pins of the power module to be at least partially inserted into the control board and the sensor module to be at least partially inserted in the power module such that a protrusion is through an opening in a busbar. The method may include pressing the control board onto the power module to cause the pins of the power module to be further inserted into the control board, the sensor module to be further inserted in the power module, and the sensor module to be at a final position.

Sensors measure magnetic field components, and the measured fields are used to calculate and estimated transverse position of a longitudinal electric current flowing as an electric discharge across a discharge gap. Based on the estimated position, and according to a selected transverse trajectory or distribution of the estimated discharge position, magnetic fields are applied transversely across the discharge gap so as to control or alter the estimated discharge position. Inventive apparatus and methods can be employed, inter alia, during operation of a vacuum arc furnace.